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Finding the Fourth Proportional to 377,447.90, 520,818.80 and 216,271.94

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Solution

The fourth proportional to 377,447.90, 520,818.80 and 216,271.94 is: 298,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,447.90 : 520,818.80 = 216,271.94 : x
  2. Step 2: Convert to fraction form
    377,447.90/520,818.80 = 216,271.94/x
  3. Step 3: Cross multiply
    377,447.90x = 520,818.80 × 216,271.94
  4. Step 4: Simplify right side
    377,447.90x = 112,638,492,264.47
  5. Step 5: Solve for x
    x = 112,638,492,264.47/377,447.90
  6. Step 6: Final answer
    x = 298,421.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.